most strikeouts by a pitcher in one season from 1990 to 1999

Between the 1990 and 1999 seasons, Randy Johnson struck out the most hitters in a season, with 364 strikeouts in 1999.

	NAME	SO	SEASON	TM	G	W	L	W%	GS	ERA	CG	SHO	SV	IP	H	ER	R	HR	BB	HBP	GF	IBB	TBF	WP	K/9	BB/9	K/BB	HR/9	K%	BB%	WHIP	BABIP	RA	ERA-	FIP	FIP-	H/9	PRAA
1	Randy Johnson R. Johnson	364	1999	ARI	35	17	9	.654	35	2.48	12	2	0	271.2	207	75	86	30	70	9	0	3	1,079	4	12.06	2.32	5.20	0.99	33.7	6.5	1.02	.292	2.85	53	2.75	59	6.86	57.2
2	Randy Johnson R. Johnson	329	1998	TOT	34	19	11	.633	34	3.28	10	6	0	244.1	203	89	102	23	86	14	0	1	1,014	7	12.12	3.17	3.83	0.85	32.4	8.5	1.18	.320	3.76	72	2.89	65	7.48	42.2
3	Curt Schilling C. Schilling	319	1997	PHI	35	17	11	.607	35	2.97	7	2	0	254.1	208	84	96	25	58	5	0	3	1,009	5	11.29	2.05	5.50	0.88	31.6	5.7	1.05	.304	3.40	69	2.61	62	7.36	45.8
4	Pedro Martinez P. Martinez	313	1999	BOS	31	23	4	.852	29	2.07	5	1	0	213.1	160	49	56	9	37	9	1	1	835	6	13.20	1.56	8.46	0.38	37.5	4.4	0.92	.323	2.36	42	1.38	30	6.75	79.4
5	Randy Johnson R. Johnson	308	1993	SEA	35	19	8	.704	34	3.24	10	3	1	255.1	185	92	97	22	99	16	1	1	1,043	8	10.86	3.49	3.11	0.78	29.5	9.5	1.11	.273	3.42	74	3.04	70	6.52	36.2
6	Pedro Martinez P. Martinez	305	1997	MON	31	17	8	.680	31	1.90	13	4	0	241.1	158	51	65	16	67	9	0	5	947	3	11.37	2.50	4.55	0.60	32.2	7.1	0.93	.258	2.42	45	2.38	57	5.89	49
7	Curt Schilling C. Schilling	300	1998	PHI	35	15	14	.517	35	3.25	15	2	0	268.2	236	97	101	23	61	6	0	3	1,089	12	10.05	2.04	4.92	0.77	27.5	5.6	1.11	.305	3.38	76	2.76	65	7.91	45.1
8	Randy Johnson R. Johnson	294	1995	SEA	30	18	2	.900	30	2.48	6	3	0	214.1	159	59	65	12	65	6	0	1	866	5	12.35	2.73	4.52	0.50	33.9	7.5	1.05	.301	2.73	53	2.08	44	6.68	62
9	Roger Clemens R. Clemens	292	1997	TOR	34	21	7	.750	34	2.05	9	3	0	264.0	204	60	65	9	68	12	0	1	1,044	4	9.95	2.32	4.29	0.31	28.0	6.5	1.03	.294	2.22	45	2.24	50	6.95	66.3
10	Randy Johnson R. Johnson	291	1997	SEA	30	20	4	.833	29	2.28	5	2	0	213.0	147	54	60	20	77	10	0	2	850	4	12.30	3.25	3.78	0.85	34.2	9.1	1.05	.281	2.54	50	2.82	62	6.21	41.3
11	John Smoltz J. Smoltz	276	1996	ATL	35	24	8	.750	35	2.94	6	2	0	253.2	199	83	93	19	55	2	0	3	995	10	9.79	1.95	5.02	0.67	27.7	5.5	1.00	.280	3.30	69	2.63	60	7.06	48.4
12	Roger Clemens R. Clemens	271	1998	TOR	33	20	6	.769	33	2.65	5	3	0	234.2	169	69	78	11	88	7	0	0	961	6	10.39	3.38	3.08	0.42	28.2	9.2	1.10	.271	2.99	57	2.65	59	6.48	49.2
13	David Cone D. Cone	261	1992	TOT	35	17	10	.630	34	2.81	7	5	0	249.2	201	78	91	15	111	12	0	7	1,055	12	9.41	4.00	2.35	0.54	24.7	10.5	1.25	.284	3.28	79	2.94	82	7.25	17.9
14	Kevin Brown K. Brown	257	1998	SDP	36	18	7	.720	35	2.38	7	3	0	257.0	225	68	77	8	49	10	0	4	1,032	10	9.00	1.72	5.24	0.28	24.9	4.7	1.07	.306	2.70	60	2.22	53	7.88	57
15	Roger Clemens R. Clemens	257	1996	BOS	34	10	13	.435	34	3.63	6	2	0	242.2	216	98	106	19	106	4	0	2	1,032	8	9.53	3.93	2.42	0.70	24.9	10.3	1.33	.305	3.93	71	3.42	70	8.01	39.1
16	Pedro Martinez P. Martinez	251	1998	BOS	33	19	7	.731	33	2.89	3	2	0	233.2	188	75	82	26	67	8	0	3	951	9	9.67	2.58	3.75	1.00	26.4	7.0	1.09	.270	3.16	61	3.39	76	7.24	28.4
17	John Smoltz J. Smoltz	241	1997	ATL	35	15	12	.556	35	3.02	7	2	0	256.0	234	86	97	21	63	1	0	9	1,043	10	8.47	2.21	3.83	0.74	23.1	6.0	1.16	.297	3.41	73	3.03	72	8.23	33.2
18	Randy Johnson R. Johnson	241	1992	SEA	31	12	14	.462	31	3.77	6	2	0	210.1	154	88	104	13	144	18	0	1	922	13	10.31	6.16	1.67	0.56	26.1	15.6	1.42	.279	4.45	96	3.60	91	6.59	7.9
19	Roger Clemens R. Clemens	241	1991	BOS	35	18	10	.643	35	2.62	13	4	0	271.1	219	79	93	15	65	5	0	12	1,077	6	7.99	2.16	3.71	0.50	22.4	6.0	1.05	.272	3.08	61	2.57	63	7.26	44.5
20	David Cone D. Cone	241	1991	NYM	34	14	14	.500	34	3.29	5	2	0	232.2	204	85	95	13	73	5	0	2	966	17	9.32	2.82	3.30	0.50	24.9	7.6	1.19	.301	3.67	91	2.51	68	7.89	31.2
21	Hideo Nomo H. Nomo	236	1995	LAD	28	13	6	.684	28	2.54	4	3	0	191.1	124	54	63	14	78	5	0	2	780	19	11.10	3.67	3.03	0.66	30.3	10.0	1.06	.246	2.96	65	2.88	71	5.83	26.1
22	Hideo Nomo H. Nomo	234	1996	LAD	33	16	11	.593	33	3.19	3	2	0	228.1	180	81	93	23	85	2	0	6	932	11	9.22	3.35	2.75	0.91	25.1	9.1	1.16	.267	3.67	82	3.57	86	7.09	15.3
23	Kerry Wood K. Wood	233	1998	CHC	26	13	6	.684	26	3.40	1	1	0	166.2	117	63	69	14	85	11	0	1	699	6	12.58	4.59	2.74	0.76	33.3	12.2	1.21	.289	3.73	80	3.16	73	6.32	21.9
24	Hideo Nomo H. Nomo	233	1997	LAD	33	14	12	.538	33	4.25	1	0	0	207.1	193	98	104	23	92	9	0	2	904	10	10.11	3.99	2.53	1.00	25.8	10.2	1.37	.311	4.51	109	3.76	91	8.38	9
25	David Cone D. Cone	233	1990	NYM	31	14	10	.583	30	3.23	6	2	0	211.2	177	76	84	21	65	1	1	1	860	10	9.91	2.76	3.58	0.89	27.1	7.6	1.14	.289	3.57	89	2.82	76	7.53	21.1